There was a download of Hydrosym 1.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Hydrosym lies within Photo & Graphics Tools, more precisely Viewers & Editors. The most popular version of the Hydrosym is 1.0. This free software is an intellectual property of Paro Software. HydroSym.exe is the common file name to indicate this program's installer. We recommend checking the downloaded files with any free antivirus.
From the developer:
Hydrosym is the most effective software package to create hydraulic diagrams. Hydrosym runs 100% stand alone and works with a comprehensive library of almost all available hydraulic components. Furthermore, components/symbols or other objects (cylinders, pumps, motors etc.) can easily be made and added to this library.
Drag your components from the library into the diagram and intelligent connections can automatically be made.
You may want to check out more software, such as HydrosymViewer, which might be similar to Hydrosym.